:root{
  --bg:#F4F8F9;--bg2:#E9F2F4;--card:#FFFFFF;--ink:#0F1E24;--muted:#56686F;--line:#DAE5E8;
  --cyan:#0A8FA4;--cyan2:#2BB8A5;--on:#FFFFFF;--glow:rgba(10,143,164,.18);
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0B1A20;--bg2:#0F232A;--card:#13262E;--ink:#E8F2F4;--muted:#93A8AF;--line:#22383F;
  --cyan:#3CC6D8;--cyan2:#5FD8B8;--on:#04252B;--glow:rgba(60,198,216,.16);
}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.75 system-ui,-apple-system,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--cyan)}
img{display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
.en{color:var(--muted);font-size:14px}

/* top bar */
.top{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em;color:var(--ink);text-decoration:none;font-size:17px}
.brand.small{font-weight:400;font-size:14px;color:var(--muted)}
.mark{width:22px;height:22px;border-radius:7px;background:linear-gradient(135deg,var(--cyan),var(--cyan2));flex:none}
.top nav{display:flex;align-items:center;gap:22px}
.top nav a{color:var(--muted);text-decoration:none;font-size:15px}
.top nav a:hover{color:var(--ink)}
.top nav .nav-cta{color:var(--on);background:var(--ink);padding:6px 14px;border-radius:999px}
@media (prefers-color-scheme:dark){.top nav .nav-cta{background:var(--cyan)}}

/* hero */
.hero{position:relative;overflow:hidden;padding:84px 0 40px}
.hero::before{content:"";position:absolute;inset:-20% -10% auto auto;width:780px;height:780px;border-radius:50%;
  background:radial-gradient(circle,var(--glow),transparent 65%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 18px;padding:5px 12px;border:1px solid var(--line);
  border-radius:999px;background:var(--card);color:var(--muted);font-size:13px;font-weight:600;letter-spacing:.03em}
.dot{width:7px;height:7px;border-radius:50%;background:var(--cyan2);box-shadow:0 0 0 4px color-mix(in srgb,var(--cyan2) 25%,transparent)}
h1{margin:0;font-size:clamp(34px,5.6vw,58px);line-height:1.18;letter-spacing:-.01em;font-weight:800}
h1 em{font-style:normal;background:linear-gradient(90deg,var(--cyan),var(--cyan2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:560px;margin:22px 0 0;color:var(--muted);font-size:18px}
.lead.en{margin-top:10px;font-size:15px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.btn{display:inline-block;padding:13px 24px;border-radius:999px;background:var(--cyan);color:var(--on);
  text-decoration:none;font-weight:700;font-size:15px;transition:transform .15s ease,box-shadow .15s ease}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 24px var(--glow)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.light{background:#fff;color:#0A4F5A}

.mosaic{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;transform:rotate(-8deg);justify-self:center;width:100%;max-width:360px;margin:12px 24px}
.mosaic img{width:100%;height:auto;aspect-ratio:1;border-radius:24%;box-shadow:0 12px 30px rgba(8,40,48,.18),0 0 0 1px rgba(255,255,255,.06) inset;
  animation:bob 6s ease-in-out infinite}
.mosaic img:nth-child(3n+2){animation-delay:-2s;transform:translateY(22px)}
.mosaic img:nth-child(3n){animation-delay:-4s}
@keyframes bob{0%,100%{translate:0 0}50%{translate:0 -8px}}
@media (prefers-reduced-motion:reduce){.mosaic img{animation:none}}

.stats{list-style:none;margin:64px 0 0;padding:22px 0 0;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stats b{display:block;font-size:26px;font-weight:800;letter-spacing:-.01em}
.stats span{color:var(--muted);font-size:14px}

/* sections */
.block{padding-top:96px}
.head{max-width:640px;margin-bottom:32px}
.kicker{margin:0 0 6px;color:var(--cyan);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase}
h2{margin:0;font-size:clamp(26px,3.6vw,36px);line-height:1.3;letter-spacing:-.01em}
.sub{margin:12px 0 0;color:var(--muted)}
.group{margin:36px 0 14px;font-size:15px;color:var(--muted);font-weight:600;letter-spacing:.04em}

.apps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.app{display:flex;gap:16px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.app:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(8,40,48,.10);border-color:color-mix(in srgb,var(--cyan) 35%,var(--line))}
.app img{width:72px;height:72px;border-radius:22%;flex:none;box-shadow:0 4px 12px rgba(8,40,48,.14)}
.app b{display:block;font-size:17px}
.app p{margin:4px 0 0;color:var(--muted);font-size:14.5px;line-height:1.65}
.app nav{display:flex;gap:14px;margin-top:10px;font-size:13.5px;font-weight:600}
.app nav a{text-decoration:none}
.app nav a:hover{text-decoration:underline}
.soon{display:inline-block;margin-top:10px;padding:2px 10px;border-radius:999px;background:var(--bg2);color:var(--muted);font-size:12.5px;font-weight:600}

.band{margin-top:96px;padding-bottom:96px;background:var(--bg2);border-block:1px solid var(--line)}
.band .block{padding-top:88px}
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.services article{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px}
.services svg{width:40px;height:40px;padding:8px;border-radius:12px;background:color-mix(in srgb,var(--cyan) 14%,transparent);
  fill:none;stroke:var(--cyan);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.services b{display:block;margin-top:16px;font-size:18px}
.services p{margin:6px 0 0;color:var(--muted);font-size:15px}
.services p.en{margin-top:12px;font-size:13px;letter-spacing:.02em}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:s}
.steps li{position:relative;padding:22px 20px 0;border-top:2px solid var(--line)}
.steps li::before{content:"";position:absolute;top:-2px;left:0;width:40px;height:2px;background:var(--cyan)}
.steps span{color:var(--cyan);font-weight:800;font-size:14px;letter-spacing:.06em}
.steps b{display:block;margin-top:6px;font-size:18px}
.steps p{margin:6px 0 0;color:var(--muted);font-size:15px}

.contact{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:44px;border-radius:28px;color:#fff;
  background:radial-gradient(ellipse at 90% 0%,rgba(255,255,255,.18),transparent 55%),linear-gradient(135deg,#087C8F,#16A08F)}
.contact h2{color:#fff;font-size:clamp(22px,3vw,30px)}
.contact p{margin:10px 0 0;color:rgba(255,255,255,.88)}
.contact .en{color:rgba(255,255,255,.72)}
.contact .btn{flex:none}

.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:80px;padding-top:24px;padding-bottom:44px;
  border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.foot nav{display:flex;gap:18px}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--ink)}

/* privacy / 404 */
.doc{max-width:760px;padding-top:56px}
.doc h1{font-size:32px}
.doc h2{margin-top:34px;font-size:20px}
.doc .muted{color:var(--muted)}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .mosaic{max-width:340px;transform:rotate(-6deg)}
  .apps,.services{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr;row-gap:28px}
  .stats{grid-template-columns:1fr 1fr}
}
@media (max-width:600px){
  .top nav{gap:14px}
  .top nav a:not(.nav-cta){display:none}
  .hero{padding:52px 0 24px}
  .mosaic{max-width:280px;gap:12px}
  .apps,.services,.steps{grid-template-columns:1fr}
  .block{padding-top:72px}
  .band{margin-top:72px;padding-bottom:72px}
  .contact{flex-direction:column;align-items:flex-start;padding:30px 24px}
  .stats b{font-size:21px}
}